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Mathematics
Problem
The function
k
(
x
)
=
e
2
x
x
k(x)=\dfrac{e^{2x}}{x}
k
(
x
)
=
x
e
2
x
is defined for
x
≠
0
x\neq 0
x
=
0
. For which of the following values of
x
x
x
does the graph of
k
k
k
have a horizontal tangent line? a)
−
0.5
-0.5
−
0.5
b)
0.5
0.5
0.5
c)
0
0
0
d)
1
1
1
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